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Topics in Catalysis
Erschienen in: Topics in Catalysis 1-4/2019

28.11.2018 | Original Article

Prospect of Using Nanoalloys of Partly Miscible Rhodium and Palladium in Three-Way Catalysis

verfasst von: Aleksey A. Vedyagin, Yury V. Shubin, Roman M. Kenzhin, Pavel E. Plyusnin, Vladimir O. Stoyanovskii, Alexander M. Volodin

Erschienen in: Topics in Catalysis | Ausgabe 1-4/2019

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Abstract

Alloys of partly miscible metals attract a growing attention due to their unique physicochemical properties. Palladium–rhodium solid solution was synthesized using a multi-metal single precursor concept. Pd–Rh/γ-Al2O3 catalyst was prepared by an impregnation of the support with a solution of a precursor containing organic ligand. The Pd:Rh ratio in the alloy was 3:2. The samples were characterized by a powder X-ray diffraction analysis, a transmission electron microscopy, electron paramagnetic resonance and photoluminescence spectroscopies. The catalytic behavior of the samples was examined in CO oxidation reaction under prompt thermal aging conditions. The stability of the bimetallic catalyst was found to be improved if compare with monometallic reference samples. Mutual anchoring of palladium and rhodium prevents both the surface migration of Pd particles followed by their agglomeration and the diffusion of rhodium ions into the bulk of alumina support. Improved metal-support interaction for the studied system was found to be facilitated by presence of electron donor sites on the surface of the support.
Vorheriger Artikel Optical Spectroscopy Methods in the Estimation of the Thermal Stability of Bimetallic Pd–Rh/Al2O3 Three-Way Catalysts
Nächster Artikel Methane Abatement and Catalyst Durability in Heterogeneous Lean-Rich and Dual-Fuel Conditions

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Metadaten
Titel
Prospect of Using Nanoalloys of Partly Miscible Rhodium and Palladium in Three-Way Catalysis
verfasst von
Aleksey A. Vedyagin
Yury V. Shubin
Roman M. Kenzhin
Pavel E. Plyusnin
Vladimir O. Stoyanovskii
Alexander M. Volodin
Publikationsdatum
28.11.2018
Verlag
Springer US
Erschienen in
Topics in Catalysis / Ausgabe 1-4/2019
Print ISSN: 1022-5528
Elektronische ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-018-1093-0

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